JPS61130096A - Writing utensil and pen point thereof and manufacture of penpoint thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] "Object of the Invention" (Industrial Application Field) The present invention relates to a writing instrument, particularly a writing instrument equipped with a porous ceramic nib, the nib thereof, and a method for manufacturing the nib. be.

(Prior art) Conventional pen nibs made of fibers such as felt and pen nibs made of m-fiber bundles have a good touch feeling on the paper surface, but have drawbacks such as poor abrasion resistance and inconsistent line 11. In addition, although the porous pen nib made of sintered metal has excellent wear resistance, it has a poor touch feel and is difficult to adjust the size and porosity of the pores for guiding ink. There are drawbacks.

In order to eliminate the above-mentioned drawbacks, various studies have been conducted and proposals have been made on porous ceramic pen nibs that utilize ceramics that have excellent properties such as wear resistance, ease of adjusting porosity, and ease of manufacturing. (For example, JP-A No. 55-22932, JP-A No. 55-48995, JP-A No. 58-58)
187198).

(Problem to be solved by the invention) The biggest difficulty in commercializing this kind of porous pen made of sintered metal or ceramic is that the outer surface of the pen tip is particularly difficult to use when oil-based ink is used. The evaporation of ink from the pores of the ink is significant, resulting in drying and clogging of the pores, making it unsustainable for long-term use. Particularly when attempting to use pigment ink, which has excellent density and chroma, it has been difficult to use because, unlike dye ink, pigment ink has large particles and tends to clog pores.

In order to prevent the pen nib from drying out, it is possible to seal the external surface that is exposed to the outside, and by igniting the nib with a flame, the ink components clogging the inside can be burned out and reused. It may be possible to use it. However, a fairly high temperature is required to burn off the ink inside the nib, and in order to burn off the ink inside the nib, ordinary pen users usually place the nib in the flames of a gas range at home. It is possible to hold the gas flame up to 1,300 to 1,800 degrees at the position where the gas flame is strongest.
Since the sealing layer must be able to withstand such high temperatures even when sealing the outer surface of a porous pen nib, the sealing layer must be able to withstand such high temperatures.

However, until now, no means has been found to seal only the outer surface of the porous pen so that it can withstand such high temperatures.

According to our experiments, when a glaze used in pottery firing is applied to the outer surface of a porous ceramic nib such as alumina and fired, the coating liquid penetrates into the pores and , Apply a normal adhesive, such as an epoxy or acrylic adhesive, to the outer surface of the porous ceramic nib, and then apply heat-resistant sealing ceramic granules made of the same material as the nib body. Even if heat treatment is attempted, the sealing ceramic material will be heated to 300 to 350℃ before sintering.
The adhesive material carbonized and the purpose could not be achieved.

The present invention was completed as a result of various experiments in order to meet the above-mentioned requirements, and the first aspect of the present invention is 1'#l+
Rula's lips', Takashi,, control-・ノ4しd-
The surface of the v-no M is sealed with a heat-resistant sealing layer made of ceramic material, glass, etc., so that it can withstand high temperatures even when the ink components clogged inside are burned off at high temperatures. The purpose of the present invention is to provide a porous ceramic pen nib.

A second object of the present invention is to provide a method that can easily and accurately manufacture such a pen nib.

A third object of the present invention is to provide a pen nib made of porous ceramic as described above, to be able to accurately supply ink to the nib depending on the amount of ink used, and to be able to supply ink to the nib accurately depending on the amount of ink used. To provide a writing implement which can use not only dye ink but also pigment ink, regardless of the type of ink.

"Structure of the Invention" The pen nib according to the present invention is a porous ceramic nib, and a heat-resistant seal made of ceramic material, glass, etc. is attached to the surface of the part exposed to the outside of the pen nib body, excluding the writing surface. layers are formed. These pen nibs include those in which a pore adjustment layer made of ceramic, glass, or the like is formed on the writing surface.

In addition, the method for manufacturing a pen nib according to the present invention includes the step of starting sintering of a pore-occluding ceramic material, glass, etc. on the surface exposed to the outside of the porous ceramic nib body and the surface of the portion forming the writing surface. A heat-resistant adhesive material that can withstand the temperature required for this is applied, and a pore-occluding ceramic material, glass material, etc. made of the same material as the nib body or a material with a lower sintering temperature than this is applied, This is heat treated,
By sintering pore-occluding ceramics, glass, etc., the pores on the writing surface are adjusted and the pores on the outer surface other than the writing surface are sealed.

In the above process, the surface exposed to the outside of the porous ceramic nib body and the surface of the portion forming the writing surface are coated with the above-mentioned heat-resistant adhesive material, the pore-blocking ceramic material marked -1-, glass material, etc. After applying the mixture, the mixture may be heat-treated.

By doing the above, the writing surface is pore-adjusted and polished to improve precision and drawing quality, and the outer surface other than the writing surface is sealed with a heat-resistant sealing layer.

Furthermore, the writing instrument according to the present invention includes a porous ceramic nib in which a heat-resistant sealing layer made of ceramic material, glass, etc. is formed on the surface of the portion exposed to the outside, excluding the writing surface, and a pen nib for holding the nib. a pen nib holder, a guide member supporting the pen nib holder, one end of which is inserted into and fixed to the pen shaft, and the other end of which is provided with a valve for outside air; The ink guide wick is provided with an ink guiding wick passing through the pen tip, one end of which is guided to the ink tank, and the other end of which is inserted into a wick insertion hole formed at the rear end of the nib.

(Function) In the porous ceramic pen nib of the present invention, a heat-resistant sealing layer made of ceramic material, glass, etc. is formed on the outer surface of the portion of the pen nib body that is exposed to the outside, excluding the writing surface. Therefore, the ink does not evaporate unnecessarily from the pores on the surface of the pen tip, and there is little risk that the ink will become difficult to dry and the pores inside will become clogged. Furthermore, even if the internal pores become clogged by using pigment ink, the clogged ink components can be easily burned off by igniting the pen tip with a flame, making it possible to reuse the pen. In this case, since the sealing layer is a heat-resistant sealing layer made of ceramic material, glass, etc., it can withstand high temperatures and can sufficiently withstand the flames of ordinary gas ranges used in ordinary homes.

The method for manufacturing the pen nib of the present invention is to apply a heat-resistant adhesive material to the outer surface of a porous ceramic nib fired into an arbitrary shape, and then apply a coating material containing ceramic particles for pore clogging to this. At least heat treatment is performed, or heat treatment is performed by applying a mixture of the heat-resistant adhesive material and a coating material containing the pore-occluding ceramic particles to the surface,
It is extremely easy to manufacture, and as a result of the adhesive material being able to withstand the temperature required to start the sintering of pore-clogging ceramic materials, glass materials, etc., the ceramic particles, glass materials, etc. mentioned above can be sintered accurately and the surface Can block stomata.

I Preferably, the heat-resistant adhesive material is one that can withstand high temperatures of about 1000°C. For example, an adhesive material containing sodium silicate as a main component is optimal, and a small amount of a binder may be added to this sodium silicate material. In this way, when an adhesive material whose main component is sodium silicate is used, when the heat treatment for sintering the ceramic material described in -1 is performed, the glassiness due to the sintering of the sodium silicate remains, and the ceramic material described in -1- Together with the seal created by sintering the material, a seal layer made of ceramic material and glass is formed.

Therefore, the sealing layer made of ceramic material, glass, etc. in the present invention includes the above-mentioned configuration.

The pores on the writing surface can be adjusted by reducing the amount of pore-occluding ceramic material, glass, etc. applied to the writing surface, and on surfaces other than the writing surface, by repeating the steps described in -. Its sealing performance can be improved. By polishing the writing surface, a smoother writing surface can be obtained and a better writing feel can be obtained. In this case, normally, porous ceramic pen nibs are fragile and have poor workability, and polishing cannot be performed accurately, but a porosity adjustment layer made of ceramic or the like is formed on the writing surface. Since it is reinforced and reinforced, it can be easily polished.

The writing instrument of the present invention includes a porous ceramic nib on which a heat-resistant sealing layer made of ceramic material, glass, etc. as described above is formed, and the nib is held in a nib holder, and this nib holder has one end. One end of the ink tank is inserted and fixed into the pen shaft, and the other end is fixed to a guiding member provided with a slit for introducing outside air, and the ink tank is arranged so as to pass through the inside of the guiding member. Ink is guided through the ink guide core, guided to a core insertion hole formed at the rear end of the nib, and guided to the writing surface via the pores in the nib body. The outside air flows into the ink tank through the outside air induction means provided in the shaft holder, and ink is supplied according to the amount of ink used on the writing surface, preventing the ink from dripping or falling. Never. Pigment ink can be used, but if pigment particles become clogged in the pores due to long-term disuse, remove the nib and ignite it with a flame to burn off the ink components inside and reuse it. can be used.

(Example) An example of a writing instrument, a nib thereof, and a method for manufacturing the nib according to the present invention will be described based on the drawings.

Figures 1 to 4 show a porous ceramic nib;
1 is a sectional view, FIG. 2 is a perspective view, FIG. 3 is a partially enlarged sectional view, and FIG. 4 is an enlarged sectional view of the writing surface.

FIG. 5 is a sectional view of the entire writing instrument, and FIGS. 6 to 8 show each member of the writing instrument.

Figure 6 shows the pen tip holder, Figure 6 (A) is a perspective view, Figure 6 (B) is a front view of the tip, and Figure 6 (C) is viewed from direction M in Figure 6 CB). 6(D) is a side view as seen from the N direction.
Figure (E) is a longitudinal cross-sectional view.

Fig. 7 shows the guiding member, Fig. 7 (A) is a perspective view, Fig. 7 (B) is a perspective view showing the distal end enlarged, and Fig. 7 (C) is a view from the distal end direction. The front view and FIG. 7(D) are longitudinal cross-sectional views.

Figure 8 is a sectional view of the pen nib, pen nib holder, guide member, and ink guide core assembled together, and Figure 9 is the above-mentioned 8
FIG. 3 is a cross-sectional view of the pen barrel and ink tank assembled in the state shown in the figure.

In the figure, numeral 1 indicates the entire porous ceramic pen nib obtained by the present invention, and the overall shape, drawn line width, etc. may vary depending on the purpose for which it is used. For example, it may be simply formed into a cylindrical shape with a circular writing surface.
Any desired writing surface can be obtained by molding the tip. 2 is a porous ceramic nib body molded from alumina, cordierite, etc., and consists of a cylindrical part 3 and a nib part 4 whose tip is molded, and the tip surface of the nib part 4 is a writing surface. It is 5.

The pen nib main body 2 has an average pore diameter of 30 to 80 l, an apparent porosity of 40 to 70%, and a total length of 12 mm.
The diameter of the writing surface 5 is 5 mm, and the writing surface 5 is 2.4 x 4.4 mm.
It is a rectangle. -1- A core insertion hole 7 is bored in the arrangement column 3 from the rear end surface 6. A bidirectional or cross-shaped cut groove 6a is formed on the rear end surface 6, and a protrusion formed at the tip of a guiding member, which will be described later, is fitted into the cut groove 6a to prevent the pen tip from rotating.

This pen nib main body 2 is not limited to the example described in -1-, but has different ceramic particle diameters at the tip and rear end, for example,
It may be molded to have a particle size of 30 to 40 hi on the front end side and a particle size of 80 pL on the rear end side. This allows the amount of ink to be drawn out to be ideal.

-I; The rear end surface 6 side of the pen nib main body 2 is sealed, and the outer peripheral surface is coated with sodium silicate, and the writing surface 5 has pores with an average particle diameter of 100 made of the same material as the nib main body 2. A small amount of alumina powder for occlusion was applied, and the same alumina powder as above was applied under high pressure to the surface 8 other than the writing surface (adhesive material application surface), and this was applied in an atmosphere of 1200 to 1650°C. Approximately 20
Heat treated for minutes. As a result, the pore-occluding ceramic material adheres to the outer surface of the nib body 2, and a ceramic pore adjustment layer 5a is formed on the writing surface 5, with an average porosity of 5.
0%, an ideal porosity was achieved, and a heat-resistant sealing layer 8a made of ceramic having a thickness of about 10 to 15 squares was formed on the surface 8 other than the writing surface, and was accurately sealed.

After applying the adhesive again to the heat-resistant sealing layer 8al2 on the surface 8, applying ceramic powder, and heat-treating the heat-resistant sealing layer, the thickness of the heat-resistant sealing layer becomes approximately 20 to 30 mm, and the pores 2a on the surface 8 are
was completely sealed.

When the writing surface 5 and its surroundings of the pen nib obtained as described above were polished to a smooth surface, the writing feel was extremely good and smooth sliding was obtained. In addition, when using a pen nib with a wide writing surface, the entire writing surface may not contact the paper surface accurately when writing, which may cause ink smearing. It is preferable to form a concave portion 5b as shown in FIG. 4 in the portion. The writing surface 5 of the pen nib shown in FIG. The diameter of 5b is set to 3 mm. and the center depth h
It is formed into an arcuate surface with a diameter of 0.15 mm.

Writing instrument 1 equipped with a pen nib l manufactured as described above
0 is clearly shown in FIG. 5, and in the figure, 20 is a pen nib holder, 30 is a guide member, 40 is a pen shaft, 50 is an ink guide core, 60 is an ink tank, and 70 is a shaft holder.

The pen tip holder 20 has a substantially cylindrical shape, and the tip opening 2
1 is used to insert and hold the pen tip l, and a threaded portion 22 is formed on the outer periphery of the rear end. A first large-diameter portion 24 is provided around the threaded portion 22 so that a first circumferential groove 23 is formed therebetween, and a second circumferential groove 25 is formed between the large-diameter portion 24 and the first large-diameter portion 24 . A second large diameter portion 26 is provided around the periphery. A vertical cut groove 27 is formed in a part of the threaded portion 22, and a cut groove 28 is formed in the first circumferential groove 23 on the opposite side thereof.

Incidentally, flat surfaces 29 are formed on both sides of a portion of the first and second large diameter portions 24, 28, and are stepped portions that are convenient for screwing in or removing the pen nib holder 20. .

The guiding member 30 has a cylindrical shape, a small diameter portion 31 is formed on the rear end side, and a pen tip boulder 2 marked 1- is formed on the tip side.
A small diameter portion 32 for insertion into the 0 is formed. One or more narrow grooves 33 are formed on the side surface of this small diameter portion 32 from the tip opening to the center of the member, and a slit 34 is bored at the tip. It acts as a valve to introduce outside air or block the introduction of air. In the embodiment, two narrow grooves 33 are provided oppositely on both sides of the -1 vehicle diameter portion 32, and 1J of the narrow grooves is 0.5 to 1.0.
Approximately mm. Furthermore, the width of the slit 34 shown in - is the same as that of a narrow groove, and the depth thereof is set to about 1 to 1.5 mm. However, the number of these narrow grooves and slits, l]
, depth, etc. should be set appropriately depending on the size of the pen tip used, the country of the ink, etc. Small protrusions 35, 35 are oppositely formed on the tip end which should come into contact with the rear end surface of the pen tip, and are fitted into the cut grooves 6a to prevent the pen tip from rotating.

The pen shaft 40 has a threaded portion 41 formed on the tip side and a threaded portion 42 on the rear end side into which the shaft holder 70 is screwed. A cylindrical portion 43 into which the small diameter portion 31 of the guiding member 30 can be tightly inserted is formed at the rear end of the pen shaft 40, and an ink guiding hole 45 is formed at the rear end edge of the cylindrical portion 43.
A stopper 44 is formed.

The ink guide core 50 is made of a fibrous material molded into a rod shape, and is inserted into the center hole 36 of the guide member 30, but is inserted loosely so as to have a predetermined gap between it and the inner wall. The leading end is inserted into the lead insertion hole 7 of the pen nib 1 indicated by -, and the rear end faces the ink guiding hole 45.

The ink tank 60 is of a well-known cartridge type with pigment ink stored therein, and the internal cap is opened by inserting the cylindrical portion 43 of the pen shaft 40 shown in -h into the tip opening 51. It is now possible to

The shaft holder 70 has a cylindrical shape, and has threaded portions 71 at both ends into which the threaded portion 42 of the pen shaft 40 can be screwed.
are formed so that the same or different types of pen nibs can be used. When one end side is not used, a cap 72 is fitted as shown in the illustrated example. Note that when not in use, a cylindrical cap with a bottom is also screwed onto the tip end side of the pen barrel 40, although not shown.

Next, to explain a usage example, the ink in the ink tank 60 is guided through the ink guiding core 50, passes from the hole 7 of the pen nib body 2 through the pore 2a, and reaches the writing surface 5, and the writing surface 5 is transferred to the paper surface. Lines, characters, etc. can be drawn by touching and moving it. Ink also fills the gap car,
The ink also enters the slits 34 and the narrow grooves 33, but since the slits 34 are blocked by this ink, there is no flow of air from the outside, and the ink does not leak to the outside and fall.

When the ink inside the pen tip is drawn out during writing work, the ink inside the slit 34 is absorbed and disappears, and the second circumferential groove 25
, the outside air is introduced through the notched grooves 28, the first circumferential grooves 23, and the notched grooves 27, and flows into the ink tank 60 in the form of air bubbles, so that ink is sequentially and accurately supplied.

Since the heat-resistant seal layer 8a is formed on the pen nib, the ink will not evaporate unnecessarily or get clogged in the pores inside the nib, but if the inside of the nib becomes clogged due to not using it for a long time, etc. In this case, each member such as the pen shaft and guiding member can be disassembled and washed with water, and only the nib L can be taken out and heated with a flame to burn off the ink components inside and be reused.

"Effects of the Invention" According to the porous ceramic pen nib according to the present invention, the initial line 111 remains unchanged because it is made of a highly wear-resistant ceramic material, and the initial writing characteristics are free from sagging. can be sustained.

A heat-resistant sealing layer made of heat-resistant ceramic material, glass, etc. is formed on the external surface of the nib body that is exposed to the outside, except for the writing surface, so ink evaporates unnecessarily from the pores on the surface of the nib. There is no risk of the ink drying out and clogging the internal pores. For this reason, not only can pigment ink be used, but if the internal pores become clogged due to long-term disuse, the clogged ink components can be easily burned off by igniting the nib with a flame. and can be reused. In this case, since the heat-resistant sealing layer is made of ceramic material, glass, etc., it can withstand high temperatures, and can sufficiently withstand the flames of ordinary gas ranges used in ordinary households. According to the method for manufacturing a pen nib of the present invention, a heat-resistant adhesive such as sodium silicate is coated on the outer surface of a porous ceramic nib fired into an arbitrary shape, and ceramic particles for pore closing are applied to the outer surface of the porous ceramic nib. or -1; apply a mixture of the heat-resistant adhesive material and the coating material containing the pore-occluding ceramic material on the outer surface of the pen nib and heat-treat the mixture. It is extremely easy to manufacture, and the adhesive material is a pore-occluding ceramic material,
It can withstand the temperature required to start sintering of glassy materials, etc., and the ceramic material, glassy material, etc. can be accurately adhered and sintered to close the pores on the surface.

Pores on the writing surface can be adjusted by reducing the amount of coating material containing a pore-occluding ceramic material or sodium silicate applied to the writing surface. By repeating this, the sealing performance can be further improved.

By polishing the writing surface, a smoother writing surface can be obtained and a better writing feel can be obtained. In this case, normally, porous ceramic pen nibs are fragile and have poor workability, and cannot be polished accurately, but the writing surface has a pore adjustment layer made of ceramic material, glass, etc. Since it is formed and reinforced, it can be easily polished.

According to the writing instrument of the present invention, the writing instrument includes a porous ceramic nib on which a heat-resistant sealing layer made of ceramic material, glass, etc. as described above is formed, and the nib is held in a nib holder. One end of the holder is inserted and fixed into the pen shaft, and the other end is fixed to a guiding member provided with a slit I for introducing outside air.
Ink is guided from the ink tank through the ink guide core arranged to penetrate inside the guide member, and is guided to the core insertion hole formed at the rear end of the pen tip, thereby filling the pores in the pen tip body. Since the ink is guided to the writing surface through the ink, the ink is supplied according to the amount of ink used on the writing surface, and there is no chance of the ink dripping.

[Brief explanation of drawings]

The drawings show an embodiment of a writing instrument, a nib thereof, and a method for manufacturing the nib according to the present invention, and FIGS. 1 to 4 show a porous ceramic nib, and FIG. 1 is a cross-sectional view; Second
The figure is a perspective view, FIG. 3 is a partially enlarged sectional view, and FIG. 4 is an enlarged sectional view of the writing surface. FIG. 5 is a sectional view of the entire writing instrument, and FIGS. 6 to 8 show each member of the writing instrument. Figure 6 shows the pen tip holder, Figure 6 (A) is a perspective view, Figure 6 (B) is a front view of the tip, Figure 6 (G)
is a side view of the state seen from direction M in FIG. 6(B),
FIG. 6(D) is a side view similarly seen from the N direction, and FIG. 6(E) is a longitudinal sectional view. Figure f57 shows the guide member, Figure 7 (A) is a perspective view, Figure 7 (B) is an enlarged perspective view of the tip, Figure 7
FIG. 7(C) is a front view seen from the tip direction, and FIG. 7(D) is a longitudinal sectional view. Figure 8 is a sectional view of the pen nib, pen nib holder, guide member, and ink guide core assembled together, and Figure 9 is the above-mentioned 8
FIG. 3 is a cross-sectional view of the pen barrel and ink tank assembled in the state shown in the figure. 1: Entire pen nib, 2: Pen nib body, 5: Writing surface 5a: Pore adjustment layer, 6: Rear end surface, 7: Lead insertion hole 8: Surface other than writing surface, 8a: Seal layer 20: Pen nib holder, 30: Guide member 34 slit, 40: Pen shaft, 50: Ink guiding core 60: Ink tank, 70: Shaft holder Fig. 1 Fig. 2 Fig. 3

Claims (1)

[Scope of Claims] 1. In a porous ceramic pen nib, a heat-resistant sealing layer made of ceramic material, glass, etc. is formed on the surface of the portion of the pen nib body that is exposed to the outside, excluding the writing surface. A pen nib featuring 2. The pen nib according to claim 1, wherein a ceramic pore number adjusting layer is formed on the writing surface. 3. The pen nib according to claim 1, wherein the writing surface is circular or rectangular, and a concave surface portion is formed approximately in the center of the writing surface. 4. The pen nib according to claim 1, wherein the average particle diameter of the ceramic used is different between the tip end and the rear end of the nib main body. 5. The heat-resistant sealing layer is made by applying an adhesive material such as a ceramic material or glass material that can withstand the temperature required to start sintering, and then applying a pore-occluding ceramic material, or by applying the above-mentioned adhesive material and a pore-occluding ceramic material. 2. The ceramic pen nib according to claim 1, wherein the ceramic nib is formed by applying a mixture with a ceramic material and then subjecting the ceramic pen to a heat treatment. 6. The heat-resistant sealing layer is made by applying an adhesive material that can withstand the temperature required to start sintering ceramic materials, glass materials, etc. and applying a pore-occluding ceramic material, or combining the above-mentioned adhesive material and pore-occluding ceramic material. The ceramic nib according to claim 1, wherein the ceramic nib is formed by repeating a heat treatment process after applying the mixture. 7. A porous ceramic nib with a heat-resistant sealing layer made of ceramic material, glass, etc. formed on the surface of the externally exposed part, excluding the writing surface, and a nib holder for holding the nib. , a guide member supporting the pen nib holder, having one end inserted and fixed into the pen shaft and having a slit provided at the other end for introducing outside air; and a guide member penetrating through the guide member and having one end A writing instrument comprising: an ink guiding core whose side is guided to the ink tank side and whose other end is inserted into a core insertion hole formed at the rear end of the nib. 8. Apply a heat-resistant adhesive material that can withstand the temperature required to start sintering, such as a pore-blocking ceramic material or glass material, to the externally exposed surface of the porous ceramic nib body, and then apply the above-mentioned nib to this. Apply a pore-closing ceramic material, glass, etc. made of the same material as the main body or a material with a lower sintering temperature, or coat the above-mentioned surface with the above-mentioned heat-resistant adhesive material and the above-mentioned pore-closing ceramic material, glass. By applying a mixture of pore-blocking ceramic, glass, etc., and heat-treating the mixture, it is possible to adjust the pores on the writing surface and seal the pores on the outer surface other than the writing surface. A manufacturing method for ceramic pen nibs.